Ever since Herodotus, it has been observed that Egypt - that is, ancient Egyptian civilisation - was a gift of the Nile. However, only recently have Egyptologists come to appreciate that Egypt was as much a gift of the desert as a gift of the water, at least as regards its very beginnings. To understand the civilisation that originally settled along the Nile Valley and in the Delta, we must study not only the remains of ancient monuments, excavated...